<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/imgs/logo.jpg" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="login_form" label-width="0px">
        <!-- 用戶名 -->
        <el-form-item prop="username" >
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password" >
          <el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button  type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item >
       </el-form>
    </div>
  </div>
</template>

<script>

export default {
  name:"login",
  data(){
      return{
          loginForm:{
            username:'admin',
            password:'123456'
          },
          // 这是表单的验证规则对象
          loginFormRules:{
            // 验证用户名对否合法：
            username:[
              { required: true, message: '请输入登录名称', trigger: 'blur'},
              { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
            ],
            // 验证密码是否合法
            password: [
              { required: true, message: '请输入密码', trigger: 'blur'},
              { min: 6, max: 10, message: '密码在 6 到 10 个字符', trigger: 'blur' }
            ]
          }
      }
      },
        methods:{
        // 点击重置按钮，重置登录表单
        resetLoginForm() 
        {
          // console.log(11111)
          // this.loginForm={}
          this.$refs.loginFormRef.resetFields();
        },
        login()
        {
          this.$refs.loginFormRef.validate( async valid=>{
            if(!valid)return;
            // 把登陆重命名为res
           const {data:res}=await this.$http.post('login',this.loginForm);
            // if(res.meta.status!==200) return console.log('登录失败');
            // console.log('登录成功');
            if(res.meta.status!==200) return this.$message.error('登录失败');
            this.$message.success('登陆成功');
            // 1、将登陆成功之后的token，保存到客户端的sessionStorage中
            // 1.1项目中出了登录之外的其他api接口，必须在登录之后才能够访问
            // 1.2token 只应在当前网站打开期间生效，所以将token保存在sessionStorage中
           console.log(res);
           window.sessionStorage.setItem("token",res.data.token);
           // 2、通过编程式导航跳转到后台主页，路由地址是/home
           this.$router.push("/home");
          })
        }
  }
 }
</script>

<!-- scoped 即为当前页面有效 -->
<style lang="less" scoped>
.login_container {
  width: 100%;
  height: 100%;
  background-color: #0d383b;
  background-image: "../assets/imgs/logo.jpg" ;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: rgb(243, 240, 239);
  border-radius: 3px;
  position: absolute;
  left: 500px;
  top: 50%;
  transform: translate(-10%, -50%);
}

.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgba(238, 238, 238, 0.863);
  }
}
.login_form{
  position:absolute;
  bottom:0;
  width:100%;
  padding:0 20px;
  box-sizing: border-box;
}

.btns{
  display:flex ;
  justify-content: flex-end;
}
</style>
